Coffee-roaster



-2 Sheets-Sheet 1.

W. vLANGfNER. A Coffee Roaster. No. 23o,|s9. Fiql Patented July 2o; 1880'.

N4 PETERS, PHOTO LITHOGRAPH ER 2 Sheets-Sheet 2.

W. LANGNER Coffee Roaster.

AF Patented July 20,1880'.

A Tr wkwm N. PETERS, PHOTO UTNOGRA WASHINGTON D C IlNirEn STATES PATENT Fries.,v

VILLIAM LAN GNER, OF READING, PENNSYLVANIA.

COFFEE-ROASTER.

SPECIFICATION forming part of Letters Patent No. 230,189, dated July 20, 1880.

Application led November 26. 1879.

To all ywhom it may concern:

Be it known that I, WILLIAM LANGNER, of the city of Reading, county of Berks, State of Pennsylvania, have invented a new and useful Improvement in Coffee-Roasters, of which the following is a specication.

This invention is more particularly related to the portable class of coffee and peanut roasters.

Heretofore there has been a difticulty in securing the uniform browning of the berry, and many plans have been tried and proved unsuccessful. The evaporation of the moisture to a certain extent has been considered a desideratum; but in ordinary practice the machines have generally evaporated to dryness, and usually, unless closely watched, the scorching of the berry followed.

The object of my invention is to produce the above-desired result with certainty and without complicated machinery.

1n the accompanying drawings, in which similar letters of reference indicate like parts, Figure l, Sheet l, is a perspective view of the portable roaster withthe frame and cylinder partially drawn out of the retort. Fig. 2, Sheet l, is a vertical cross-section, showing the internal construction. Fig. 3 is a plan of the roaster-irame. Fig. 4 is a perspective View of the case with the roasting-cylinder removed. Fig. 5 is a perspective view of the roastin g-cylin der in its frame.

Referring to the drawings, A is the outer case, of sheet-iron or other suitable metal. A' is the interior case or retort which surrounds the roasting-cylinder; B, the tire-door, B', the fire-pot.

C is the ash-pit, D, the end doors for closing in the roastingcylinder; E, the frame in which the roasting-cylinder is hung; E', the ledges in the interior of the retort A', which retains the frame E in place and supports the same when drawn out for the purpose ot' emptying the cylinder g; F, the cylinder-heads; g, the cylinder-case, of sheet metal; H, perforated inward-projecting tubes, stirrers, and exhausters. These tubes are llattened and closed at their inner ends to give them stift'- ness, and, to allow more room for the material undergoing roasting, they are spaced alter- 5o nately with reference to each other around the circumference of the cylinder to continually stir up the berries in the same.-

H' is the door through which the cylinder is filled and emptied, secured,when closed, by

a pin, H".

m m' are the gears by which motion is given to the cylinder. In a small machine the power is applied by hand through a crank, N, and in large roasters through a pulley on the shaft M 6o or M', as may be desired.

The operation of the roaster is as follows: The doors D are opened and the frame E, with cylinder gand gears mm', withdrawn far enough out of the retort A' to admit of the 65 opening of the door H', which being done, the cylinder gis filled with the berries to be roasted, door H' closed, and frame E with cylinder and gears returned to the retort, the doors D closing the same. B', and the products of combustion are passed entirely around the case of the retort A', the passage out of the stack J being controlled by the damper J'. In the meanwhile the heat Fire is madein the lire-pot 7o radiated from the retort passes into the cylinder-case g and through the perforated tubes H into and around the berries. This causes a rapidl evaporation of the moisture in the berry, which is released from the cylinder by the perforated tubes H, and passes away from the 8o retort A' by the exhaust-pipe K. The color of the steam from the exhaust indicates the condition of the berries in the cylinder, and by observation of that alone the color of the berry and the extent of roasting given can to the frame E, with the cylinder g and its load of berries, thus doing away with any eX- traneous supporting accessories.

l shaft a distance suflicient to give full support Holes are provided in the rear end of the perforated over their entire surface, :tud flatcase through Which the extra length of side tened and closed at their extreme inner ends, frames projects. forming beaters or stirrers for shifting the ber- 15 This roaster can be adapted for family use, ries in the Cylinder, und exhausters for the 5 as Well as for manufacturing on a large scale. moisture arising duriu g roasting, as described.,

Having explained my invention, I claim as in combination with the frame E und retort follows, to Wit: l A', substantially as shown, and for the pur- The roasting-cylinder g, of sheet n1et2tl,h2wpose specified. w

Witnesses:

1o emptying the same, and 2t series of alternating circular openings in the shell, said openings being shielded by inward-'projecting tubes H,

JAMES It. KENNEY, J. C. FELTER.

ing :t door, H', for the purpose of filling;` und i WILLIAM LANGNER. 

